Year	Percent
1950	10.75871
1955	9.76537
1960	11.31497
1965	12.63893
1970	12.8907
1975	12.98797
1980	13.04426
1985	13.3475
1990	13.60835
1995	13.86534
2000	13.53215
2005	12.36499
2010	12.5944
2015	12.49238
2020	12.32792
2025	11.45987
2030	10.93669
2035	10.49411
2040	10.12674
2045	9.74281
2050	9.30784
2055	8.86738
2060	8.4802
2065	8.12083
2070	7.78643
2075	7.47023
2080	7.16206
2085	6.85233
2090	6.57661
2095	6.34528
2100	6.13613