Year	Percent
1950	12.43746
1955	12.98247
1960	13.63385
1965	11.05768
1970	11.44043
1975	12.28334
1980	13.19579
1985	12.44656
1990	12.86676
1995	12.09891
2000	13.32164
2005	12.206
2010	11.53449
2015	10.72706
2020	9.68484
2025	9.25958
2030	8.84408
2035	8.46733
2040	8.05189
2045	7.59631
2050	7.17276
2055	6.84607
2060	6.62944
2065	6.48332
2070	6.36858
2075	6.24894
2080	6.14267
2085	6.04525
2090	5.99197
2095	5.95967
2100	5.93688