Year	Percent
1950	10.65461
1955	9.74594
1960	6.70409
1965	6.92994
1970	9.47848
1975	11.45128
1980	11.95622
1985	10.38869
1990	10.14777
1995	10.11757
2000	10.84906
2005	11.7628
2010	11.25261
2015	9.063
2020	7.64993
2025	8.32066
2030	8.62897
2035	8.20996
2040	7.36525
2045	6.67788
2050	6.42928
2055	6.42031
2060	6.37446
2065	6.14361
2070	5.84718
2075	5.62337
2080	5.53855
2085	5.52846
2090	5.50854
2095	5.43336
2100	5.31878