Year	Percent
1950	11.67694
1955	11.82445
1960	11.88963
1965	12.15624
1970	12.53125
1975	12.68224
1980	12.53959
1985	12.28081
1990	11.55849
1995	10.85361
2000	10.28588
2005	9.7272
2010	9.49105
2015	9.02071
2020	8.75423
2025	8.56006
2030	8.09866
2035	7.71502
2040	7.39141
2045	7.08247
2050	6.78793
2055	6.5272
2060	6.28101
2065	6.054
2070	5.8593
2075	5.69927
2080	5.55072
2085	5.42251
2090	5.31018
2095	5.21014
2100	5.12603