Year	Percent
1950	10.95677
1955	11.17709
1960	11.13934
1965	10.74078
1970	10.71873
1975	10.99013
1980	11.37583
1985	12.00811
1990	12.35683
1995	12.68753
2000	12.45589
2005	12.33618
2010	12.50365
2015	12.64905
2020	12.64865
2025	12.03452
2030	11.53858
2035	11.06214
2040	10.59835
2045	10.11651
2050	9.64531
2055	9.18249
2060	8.76062
2065	8.38599
2070	8.0228
2075	7.7038
2080	7.41054
2085	7.15322
2090	6.9276
2095	6.73928
2100	6.58078