Year	Percent
1950	12.76617
1955	13.18776
1960	13.54308
1965	13.42079
1970	13.28783
1975	13.10476
1980	13.44194
1985	13.12411
1990	12.93028
1995	12.35493
2000	11.70937
2005	11.20606
2010	11.34691
2015	12.00746
2020	12.77661
2025	14.02836
2030	15.32737
2035	17.0721
2040	19.2808
2045	21.16162
2050	22.60142
2055	23.61377
2060	24.24358
2065	24.80744
2070	25.39779
2075	25.77749
2080	25.95549
2085	25.98377
2090	25.92758
2095	25.79231
2100	25.59142