Year	Percent
1950	10.06332
1955	10.36623
1960	10.78641
1965	11.40858
1970	10.22466
1975	10.178
1980	10.39346
1985	10.73678
1990	10.39347
1995	10.7425
2000	11.37411
2005	12.23596
2010	12.5482
2015	11.31305
2020	10.77165
2025	10.67889
2030	10.69072
2035	10.27519
2040	9.73693
2045	9.21516
2050	8.77025
2055	8.37581
2060	8.01191
2065	7.65636
2070	7.26673
2075	6.90104
2080	6.59471
2085	6.34193
2090	6.14965
2095	6.0034
2100	5.88458